Influence of Interfacial Area State on Mechanical Properties

1 Influence of Interfacial Area State on Mechanical Properties 

According to the general principle of filling modified polymer matrix composites, the packing material must reach a certain 

L/D ratio, and the interfacial combination status of the filler and matrix also plays an important role to ensure that the packing material has enough of an enhancement effect. 

At present, research on polymers modified with inorganic whiskers focuses mainly on mechanical performance analysis and further theoretical analysis is relatively rare. In recent years, the finite element method has been widely used in such studies, which can provide a necessary theoretical basis for the micro-structure design of material and macro performance improvement. 

Guo et al. 5 ook resin matrix composites filled with SIC whiskers as an example and analyzed the effect of the inter-facial zone state on mechanical properties of composite materials by finite element method. They hold that when whiskers are randomly distributed in a resin matrix with a certain volume fraction, they demonstrate a periodic distribution from the statistical point of view. It is assumed that the SIC whisker-reinforced phase in resin matrix composites is arranged in one direction without considering the effect of whisker orientation, the analysis model can be simplified as a rotator shape with the large cylindrical part as the polymer matrix and the small cylindrical part as the whisker. Therefore, a three-dimensional problem turns into an axisymmetric problem, and only a quarter part of the body model is taken in the calculation. 

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